react app

react-app/node_modules/lodash/internal/createPartialWrapper.js

@@ -0,0 +1,43 @@
+var createCtorWrapper = require('./createCtorWrapper');
+
+/** Used to compose bitmasks for wrapper metadata. */
+var BIND_FLAG = 1;
+
+/**
+ * Creates a function that wraps `func` and invokes it with the optional `this`
+ * binding of `thisArg` and the `partials` prepended to those provided to
+ * the wrapper.
+ *
+ * @private
+ * @param {Function} func The function to partially apply arguments to.
+ * @param {number} bitmask The bitmask of flags. See `createWrapper` for more details.
+ * @param {*} thisArg The `this` binding of `func`.
+ * @param {Array} partials The arguments to prepend to those provided to the new function.
+ * @returns {Function} Returns the new bound function.
+ */
+function createPartialWrapper(func, bitmask, thisArg, partials) {
+  var isBind = bitmask & BIND_FLAG,
+      Ctor = createCtorWrapper(func);
+
+  function wrapper() {
+    // Avoid `arguments` object use disqualifying optimizations by
+    // converting it to an array before providing it `func`.
+    var argsIndex = -1,
+        argsLength = arguments.length,
+        leftIndex = -1,
+        leftLength = partials.length,
+        args = Array(leftLength + argsLength);
+
+    while (++leftIndex < leftLength) {
+      args[leftIndex] = partials[leftIndex];
+    }
+    while (argsLength--) {
+      args[leftIndex++] = arguments[++argsIndex];
+    }
+    var fn = (this && this !== global && this instanceof wrapper) ? Ctor : func;
+    return fn.apply(isBind ? thisArg : this, args);
+  }
+  return wrapper;
+}
+
+module.exports = createPartialWrapper;